Minio as Aws S3 alternative. Minio overview and install.

MinIO is an open-source, high-performance, distributed object storage system designed to be fully compatible with the Amazon S3 API.

It can be deployed on-premises, in the cloud, or at the edge, and is optimized for speed, scalability, and security. MinIO is widely used in modern data workloads, including AI/ML, analytics, backup, and hybrid cloud environments.

Minio is very easy to use

• Simple Deployment: MinIO is known for its straightforward installation and configuration process. It is considered much easier to set up and manage than more complex self-hosted solutions like Ceph.
• S3 API Compatibility: Its strict adherence to the S3 API means applications and tools built for AWS S3 can work with MinIO without modification, simplifying migration and integration.
• User Experience: MinIO provides both a web-based UI and a CLI, both of which are praised for their simplicity and ease of use.
• Documentation and Community: While MinIO has a growing community and decent documentation, it may not match the extensive resources available for AWS S3.

Comparison: MinIO vs AWS S3

Installing Minio as Systemd service

Recommended to download deb package and install it with dpkg - this will also create a minio systemd service file.

wget https://dl.min.io/server/minio/release/linux-amd64/archive/minio_20250422221226.0.0_amd64.deb -O minio.deb
sudo dpkg -i minio.deb

How to Install Dockerised MinIO

MinIO can be quickly deployed using Docker with just a single command. Below are the step-by-step instructions for a basic single-node, single-drive setup.

1. Prepare a Data Directory

Create a directory on your host system to persist MinIO data:

mkdir -p ~/minio/data

This ensures your data is retained even if the container is removed or restarted.

2. Run MinIO with Docker

Use the following command to start MinIO:

docker run -p 9000:9000 -p 9001:9001 \
  --name minio1 \
  -e "MINIO_ROOT_USER=minioadmin" \
  -e "MINIO_ROOT_PASSWORD=minioadmin" \
  -v ~/minio/data:/data \
  minio/minio server /data --console-address ":9001"

• -p 9000:9000: Exposes the MinIO API on port 9000.
• -p 9001:9001: Exposes the MinIO web console on port 9001.
• --name minio1: Names your container for easy management.
• -e "MINIO_ROOT_USER=minioadmin" and -e "MINIO_ROOT_PASSWORD=minioadmin": Set the root user and password (change these for production).
• -v ~/minio/data:/data: Mounts your local data directory to the container for persistent storage.
• minio/minio server /data --console-address ":9001": Starts the MinIO server and enables the web console.

3. Access the MinIO Console

• Open your browser and go to http://localhost:9001
• Log in with the credentials you set above (minioadmin / minioadmin by default).

4. (Optional) Using Docker Compose

For more advanced setups or development, you can use Docker Compose. Example Compose files and instructions are available in community repositories.

5. (Optional) Install the MinIO Client

To interact with your MinIO server via CLI, install the MinIO client (mc):

curl -O https://dl.min.io/client/mc/release/linux-amd64/mc
chmod +x mc
sudo mv mc /usr/local/bin/mc

Then configure it to connect to your MinIO server:

mc alias set local http://127.0.0.1:9000 minioadmin minioadmin

This setup gives you a fully functional, S3-compatible object storage server running locally via Docker. For production deployments, consult the official MinIO documentation for advanced configuration, security, and scaling options.

Steps to Configure MinIO Using Docker Compose

1. Prepare a Data Directory

Create a directory on your host machine to persist MinIO data:

mkdir -p ~/minio/data

This directory will be mounted into the container to ensure data persists across restarts.

2. Create a Docker Compose File

In your working directory, create a file named docker-compose.yml and add the following content (customize as needed):

version: '3.7'

services:
  minio:
    image: minio/minio
    container_name: minio
    ports:
      - "9000:9000"
      - "9001:9001"
    environment:
      MINIO_ROOT_USER: minioadmin
      MINIO_ROOT_PASSWORD: minioadmin
    volumes:
      - ~/minio/data:/data
    command: server /data --console-address ":9001"

• Change MINIO_ROOT_USER and MINIO_ROOT_PASSWORD to secure values for production use.
• Adjust the volume path if you are using a different directory.

3. Start the MinIO Service

Run the following command in the same directory as your docker-compose.yml:

docker-compose up -d

This command will pull the MinIO image if not present, create the container, and start the service in detached mode.

4. Verify the Service

Check that MinIO is running:

docker-compose ps

You can also view logs to ensure there are no errors:

docker-compose logs minio

5. Access the MinIO Console

• Open your browser and go to http://localhost:9001
• Log in using the credentials you set (minioadmin / minioadmin by default).

Summary Table

For more advanced setups (e.g., distributed mode, custom configs), refer to the official MinIO Compose documentation or community guides.

Advantages of MinIO

• Cost-Effective: No licensing fees; runs on commodity hardware, which can significantly reduce total cost of ownership compared to managed cloud storage.
• Open Source: Fully open-source, allowing for customization and transparency.
• S3 API Compatibility: Seamless migration for S3-based applications; works with existing S3 tools and workflows.
• Performance: Optimized for high throughput and low latency, especially on modern hardware; often outperforms AWS S3 in certain workloads.
• Deployment Flexibility: Can be deployed anywhere-on-premises, in any cloud, or at the edge-enabling hybrid and multi-cloud strategies.
• Data Control: Organizations retain full control over data location and access, which is critical for data sovereignty and security.

Challenges of MinIO

• Manual Scalability: Scaling requires manual configuration and management, unlike AWS S3’s automatic scaling.
• Compliance Burden: Compliance with standards (e.g., GDPR, HIPAA) is the responsibility of the deploying organization, not MinIO itself.
• Support: While MinIO offers commercial support, the breadth and depth of support may not match AWS’s enterprise-level offerings.
• Operational Overhead: As a self-hosted solution, MinIO requires ongoing maintenance, monitoring, and updates by the user.
• Feature Gaps: Some advanced features and integrations available in AWS S3 may not be present or as mature in MinIO.

Minio vs ASW S3 Pricing

• MinIO: Free to use under an open-source license (AGPL v3). Costs are primarily those of the underlying infrastructure (servers, storage, network) and any optional commercial support contracts.
• AWS S3: Pay-as-you-go pricing based on storage used, data transfer, and API requests. Offers multiple storage classes with varying costs, enabling cost optimization for different use cases.

Summary

MinIO is a powerful, open-source alternative to AWS S3, offering S3 API compatibility, high performance, and deployment flexibility at a lower cost-especially for organizations that prefer or require self-hosted storage. It is easy to use and integrates well with existing S3-compatible tools. However, it requires more hands-on management, particularly for scaling and compliance, and lacks the deep integration and support ecosystem of AWS S3. The choice between MinIO and AWS S3 depends on your specific needs for control, cost, scalability, compliance, and operational overhead.

MinIO is designed to be highly compatible with the Amazon S3 API, making it one of the most widely adopted S3-compatible object storage solutions outside AWS. MinIO strictly follows the S3 API, supporting both V2 and V4 signatures, and is used by many organizations as a drop-in alternative to AWS S3 for on-premises, hybrid, and multi-cloud environments.

Key Points on Compatibility Minio with AWS S3

• API Support: MinIO implements the core S3 API, allowing most applications and tools built for AWS S3 to work seamlessly with MinIO without modification.
• Deployment Flexibility: MinIO can be deployed on-premises, in the cloud, or at the edge, offering flexibility not available with AWS S3, which is fully managed within AWS.
• Community and Adoption: With millions of deployments, MinIO is considered the standard for S3 compatibility outside AWS, and it is widely used in cloud-native, AI/ML, and analytics workloads.

Limitations and Differences

Despite its high level of compatibility, MinIO is not a 100% drop-in replacement for AWS S3 in every scenario. Some users and developers have reported minor differences in behavior, particularly in edge cases or less commonly used API features:

• Behavioral Differences: Certain S3 API calls, such as listing objects and handling of pseudo-directories, may behave differently in MinIO compared to AWS S3. These differences can affect applications that rely on specific S3 behaviors.
• Implementation Details: MinIO may deliberately deviate from AWS S3 in some areas, sometimes for architectural reasons. This means that while the majority of S3 tools and SDKs work with MinIO, rare incompatibilities can arise, especially for complex or highly specialized S3 use cases.
• Compliance and Integration: AWS S3 offers deep integration with other AWS services and certified compliance for many regulatory standards, which MinIO does not provide out of the box.

All the main tools and SDKs can talk perfectly with MinIO, it’s just that there are different implementation details around the edges… MinIO definitely provides S3 compatibility, [but] it’s probably not fully compatible, it’s definitely compatible enough for many use cases.

Comparison Table: MinIO vs AWS S3 (Compatibility Focus)

MinIO offers robust S3 API compatibility and is suitable for most workloads that use AWS S3. However, it is not guaranteed to be a 1:1 replacement for every AWS S3 feature or behavior. Careful evaluation and testing are advised for applications with complex or non-standard S3 usage pattern.

Useful links

• https://min.io/docs/minio/linux/operations/installation.html
• https://min.io/docs/minio/linux/operations/install-deploy-manage/deploy-minio-single-node-single-drive.html
• MinIO Commandline Parameters Cheatsheet
• Reinstall linux
• Bash Cheat Sheet
• Kubernetes Cheatsheet
• Install portainer on linux